Cisco 4G-ANTM-OM-CM, Manual

Page: 235 / 535

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Cisco Aironet 2.4-GHz/5-GHz 8-dBi Directional Antenna (AIR-ANT2588P3M-N)
Installing the Antenna
Note: Cisco recommends grounding the antenna. See Grounding the Antenna, page 235 .
Antenna Cable Information
The antenna is to be used with the Cisco 1552E access point. The port-to-port designations are as follows: port A of
the antenna must be connected to port 4 of the access point, port B of the antenna must be connected to port 6 of the
access point, and port C of the antenna must be connected to port 5 of the access point.
Note: Coaxial cable loses efficiency as the frequency increases, resulting in signal loss. The cable should be kept as short
as possible, because cable length also determines the amount of signal loss (the longer the run, the greater the loss).
Cisco offers low-loss 5 ft. and 10 ft. coaxial cables, parts AIR-CAB005LL-N and AIR-CAB010LL-N, respectively, for
connection from the antenna to the access point. These cables have one straight male type-N connector and one right
angle male type-N connector. To use all of the ports on the AIR-ANT2588P3M-N three cables will be needed.
After the cable is attached to the antenna, make sure that the connections are sealed (if outdoors) to prevent moisture
and other weathering elements from affecting performance. Cisco recommends using a coax seal (such as CoaxSeal)
for outdoor connections. Silicone sealant or electrical tape are
not recommended for sealing outdoor connections.
Grounding the Antenna
Follow these steps to ground the antenna in accordance with national electrical code instructions.
1. Use No. 10 AWG copper or No. 8 or larger copper-clad steel or bronze wire as ground wires for both mast and
lead-in. Securely clamp the wire to the bottom of the mast.
2. Secure the lead-in wire to an antenna discharge unit and the mast ground wire to the building with stand-off
insulators spaced from 4 ft (1.2 m) to 8 ft (2.4 m) apart.
3. Mount the antenna discharge unit as close as possible to where the lead-in wire enters the building.
4. Drill a hole in the building’s wall as close as possible to the equipment to which you will connect the lead-in cable.
Caution: There may be wires in the wall. Ensure that your drilling location is clear of obstruction or other hazards.
5. Pull the cable through the hole and form a drip loop close to where it enters the building.
6. Thoroughly waterproof the lead-in area.
7. Install a lightning arrestor.
8. Connect the lead-in cable to the equipment.
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE
WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO
BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE
FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE INCORPORATED
HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY,
CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
The following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case users will be required to correct the interference at
their own expense.